Sök:

Sökresultat:

1710 Uppsatser om Noise levels - Sida 43 av 114

Jämförelse mellan olika material i spåröverbyggnadens bärlagerbärighets- och materialprovning av spårväg i Göteborg

This report is a study in voltagelevel in connection with regeneration of brake energy from the tramtype M31 in Gothenburg.In the act of braking, the tram M31 uses electrical braking where the electrical motors generates energy and if possible send it back to the overheadline, where other trams in the nearby can use this regenerated energy for its own driving force. In cases where no other energyconsumers are located in the same section, there is a resistance witch task is to convert this energy into heat. The regulation of this resistance appears to cause an increase in the voltagelevel into far too high levels.Investigations of the trams regulationequipment and its construction have been done. Further have measurements on the overheadline been performed in order to map the voltagevariations during a longer period of time.The result have been showing that the voltagelevel during regeneration often is as high as 880V-920V, more extreme values have not been observed in a large scale. The values are especially high compared to the nominal voltagelevel.

Kvalitetssäkring i tjänsteföretag : En jämförande studie mellan Ving och SIQ:s riktlinjer för kvalitetssäkring

When managing the quality of a service producing industry?s products, the industry faces greater challenges than the manufacturing industries do. Today?s globalization puts further pressure on service producing companies around the world to work at their absolute maximum. So, how do service producing companies work to manage quality? In this essay the writers take a deeper look at the travel agency Ving, part of My Travel Northern Europe.

Kvalitetssäkring i tjänsteföretag : En jämförande studie mellan Ving och SIQ:s riktlinjer för kvalitetssäkring

When managing the quality of a service producing industry?s products, the industry faces greater challenges than the manufacturing industries do. Today?s globalization puts further pressure on service producing companies around the world to work at their absolute maximum. So, how do service producing companies work to manage quality? In this essay the writers take a deeper look at the travel agency Ving, part of My Travel Northern Europe.

EN NOT OCH TVÅ BOKSTÄVER - Diskursanalys kring användandet av tonnamnen H, B och Bb

Different ways of naming the two pitches between A and C exist in Sweden, Norway and Denmark. The Germanic tradition uses B and H, whereas the Anglo-Saxon tradition uses Bb and B. The aim of this study was to present a survey of the various opinions regarding these pitch names. The material consisted of different opinions about this matter from Swedish, Norwegian, and Danish websites. By means of discourse analysis the material was analysed in themes, which consisted of logic, tradition and communication.

Grundvattenskydd och markanvändning i tre olika länder- effekter för miljö och samhälle

AbstractDrinking water is an important resource on Earth both for humans and animals. Although most of the surface is covered by water only a small quantity is available as drinking water. Our manner of living creates a lot of pollution which has an environmental impact. Groundwater has a protracted turnover time in the soil and it can take many years before the effects of human impact are detected. The Swedish environmental object is ?Good groundwater quality? which aims to provide a safe and sustainable supply of drinking water today and in the future.

Incitament för förbättrat miljöarbete. En studie av miljöarbete I relationen mellan beställare och entreprenör

This report is a study in voltagelevel in connection with regeneration of brake energy from the tramtype M31 in Gothenburg.In the act of braking, the tram M31 uses electrical braking where the electrical motors generates energy and if possible send it back to the overheadline, where other trams in the nearby can use this regenerated energy for its own driving force. In cases where no other energyconsumers are located in the same section, there is a resistance witch task is to convert this energy into heat. The regulation of this resistance appears to cause an increase in the voltagelevel into far too high levels.Investigations of the trams regulationequipment and its construction have been done. Further have measurements on the overheadline been performed in order to map the voltagevariations during a longer period of time.The result have been showing that the voltagelevel during regeneration often is as high as 880V-920V, more extreme values have not been observed in a large scale. The values are especially high compared to the nominal voltagelevel.

Passivhus det långsiktiga valet. En konkret jämförelse mellan konventionellt byggande och passivhus

This report is a study in voltagelevel in connection with regeneration of brake energy from the tramtype M31 in Gothenburg.In the act of braking, the tram M31 uses electrical braking where the electrical motors generates energy and if possible send it back to the overheadline, where other trams in the nearby can use this regenerated energy for its own driving force. In cases where no other energyconsumers are located in the same section, there is a resistance witch task is to convert this energy into heat. The regulation of this resistance appears to cause an increase in the voltagelevel into far too high levels.Investigations of the trams regulationequipment and its construction have been done. Further have measurements on the overheadline been performed in order to map the voltagevariations during a longer period of time.The result have been showing that the voltagelevel during regeneration often is as high as 880V-920V, more extreme values have not been observed in a large scale. The values are especially high compared to the nominal voltagelevel.

Utveckling av en ljudsimulator med anva?ndarcentrerad design : Tilla?mpad matematik fo?r ba?ttre konsertupplevelse

The company Sound Precision has developed a new Line Array loudspeaker system (VHA-40). When using this system, their customers need computer aid to get the best possible sound-quality and control of sound levels for the whole audience. The aim of this thesis is to develop a truly useful sound quality simulator for the VHA-40. The system will help the sound engineers to position the loudspeakers for optimal sound by simulating loudspeaker configurations and visualizing the resulting sound quality and quantity. To solve this a human-centered design (HCD) approach is taken to implement a system that is truly useful for the users, meaning that they will use it more and hence deliver better sound for the audience.

Simulering av exteriört bussljud : Undersökande av en Ray Tracing metod för ljudsimuleringar

En metod för att simulera exteriört bussljud med hjälp utav Ray Tracing har testats och utvärderats. En modell av en buss har byggts upp i ett CAD program. Dominerande ljudkällor i bussen samt materialkoefficienter har tagits fram för de material som ingår i bussen. Bussen har sedan förts in i simuleringsprogrammet Odeon, där ett antal simuleringar har utförts. Olika pass-by simulering har utförts och jämförts med mätningar.

ConneXion : Konstruktion och produktutveckling utav proteskoppling

The company Sound Precision has developed a new Line Array loudspeaker system (VHA-40). When using this system, their customers need computer aid to get the best possible sound-quality and control of sound levels for the whole audience. The aim of this thesis is to develop a truly useful sound quality simulator for the VHA-40. The system will help the sound engineers to position the loudspeakers for optimal sound by simulating loudspeaker configurations and visualizing the resulting sound quality and quantity. To solve this a human-centered design (HCD) approach is taken to implement a system that is truly useful for the users, meaning that they will use it more and hence deliver better sound for the audience.

Den fysiska vårdmiljöns betydelse för vårdtagarnas välbefinnande. En litteraturstudie

Sammanfattning Syftet var att belysa den fysiska vårdmiljöns betydelse för vårdtagarens välbefinnande. Frågeställningen löd; Hur belyser litteraturen vårdtagarens upplevelse av den fysiska vårdmiljöns betydelse för välbefinnandet? Metoden var en litteraturstudie och sökning av vetenskapliga artiklar har skett på databaserna Cinahl, Academic Search Elite, Emerald, Springer Link, ADAM, BYGGDOK, Pubmed, IDEAL, Kluwer, Libris, ScienceDirect och Scirus. Sökord som används både separat och tillsammans inom samtliga databaser var health facility, environment, architecture, design, art, surroundings, ward, garden, välbefinnande/well-being, hospital, health, light, noise. Med sökmotorer har vi sökt på nämnda sökord och namn på olika forskare, samt MeSH- sökverktyg för översättning av svenska ord till engelska.

Aktiemarknaden ur ett psykologiskt perspektiv utifrån finansanalytikers synvinkel

The Swedish population has the world?s largest percentage of shareholders either by direct or indirect owning. Due to the increasing interest of equity capital markets, private as well as institutional investors rely on forecasts from financial analysts. The reason for this is due to the lack of expertise among investors in this area. Due to the fact that analysts influence the Swedish stock market immensely, it?s of great interest to explore whether an analyst can be seen as a rational participant.

Undersökning av samband mellan MCV och geotekniska parametrar. Analys utifrån fält- och laboratorieförsök på finkornig jord

This report is a study in voltagelevel in connection with regeneration of brake energy from the tramtype M31 in Gothenburg.In the act of braking, the tram M31 uses electrical braking where the electrical motors generates energy and if possible send it back to the overheadline, where other trams in the nearby can use this regenerated energy for its own driving force. In cases where no other energyconsumers are located in the same section, there is a resistance witch task is to convert this energy into heat. The regulation of this resistance appears to cause an increase in the voltagelevel into far too high levels.Investigations of the trams regulationequipment and its construction have been done. Further have measurements on the overheadline been performed in order to map the voltagevariations during a longer period of time.The result have been showing that the voltagelevel during regeneration often is as high as 880V-920V, more extreme values have not been observed in a large scale. The values are especially high compared to the nominal voltagelevel.

Viltbroar i Sverige. En jämförelsestudie på rörbroar av stål som alternativ till traditionella betongbroar vid uppförande av faunapassager

This report is a study in voltagelevel in connection with regeneration of brake energy from the tramtype M31 in Gothenburg.In the act of braking, the tram M31 uses electrical braking where the electrical motors generates energy and if possible send it back to the overheadline, where other trams in the nearby can use this regenerated energy for its own driving force. In cases where no other energyconsumers are located in the same section, there is a resistance witch task is to convert this energy into heat. The regulation of this resistance appears to cause an increase in the voltagelevel into far too high levels.Investigations of the trams regulationequipment and its construction have been done. Further have measurements on the overheadline been performed in order to map the voltagevariations during a longer period of time.The result have been showing that the voltagelevel during regeneration often is as high as 880V-920V, more extreme values have not been observed in a large scale. The values are especially high compared to the nominal voltagelevel.

Utredning av Aktiv designprojektet vid RV40. Inriktning mot utveckling av objektiv kontrollmetod med avseende på framtida funktion

This report is a study in voltagelevel in connection with regeneration of brake energy from the tramtype M31 in Gothenburg.In the act of braking, the tram M31 uses electrical braking where the electrical motors generates energy and if possible send it back to the overheadline, where other trams in the nearby can use this regenerated energy for its own driving force. In cases where no other energyconsumers are located in the same section, there is a resistance witch task is to convert this energy into heat. The regulation of this resistance appears to cause an increase in the voltagelevel into far too high levels.Investigations of the trams regulationequipment and its construction have been done. Further have measurements on the overheadline been performed in order to map the voltagevariations during a longer period of time.The result have been showing that the voltagelevel during regeneration often is as high as 880V-920V, more extreme values have not been observed in a large scale. The values are especially high compared to the nominal voltagelevel.

<- Föregående sida 43 Nästa sida ->